Tilting furnace.



0. P. TURNER, W. T. DRAKE & J. E. LITTLE.

TILTING FURNACE.

APPLICATION FILED OCT. 26, 1910.

" Patented Feb. 10, 1914.

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C. P. TURNER, W. T. DRAKE & J. E. LITTLE. TILTING FURNACE.

APPLICATION FILED 00T.26, 1910. 1,086,485. Patented Feb. 10, 1914.

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G. P. TURNER, W. T. DRAKE & J. E. LITTLE.

TILTING FURNACE.

APPLIGATION FILED OCT. 26, 1910.

Patented Feb. 10, 1914.

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COLUMBIA PLANDGRAIII CO\\'ASH]NGTCIN, D. c.

G. P. TURNER, W. T. DRAKE & J. E. LITTLE.

TILTING FURNACE.

APPLICATION FILED OCT. 26, 1910.

Patented Feb. 10, 1914.

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'rns PATENT OFFICE.

CHARLES P. TURNER AND WILLIAM T. DRAKE, OF HARRISBURG, AND JAMES E.LITTLE, OF STEEL'ION, PENNSYLVANIA.

TILTING FURNACE.

ilJUSfiASIi.

To all whom it may concern:

Be it known that we, CHARLES P. TURNER and lVILLIAM T. DRAKE, residingat Harrisburg, in the county of Dauphin and State of Pennsylvania, andJAMES E. LITTLE, residing at Steelton, county and State aforesaid, haveinvented certain new and useful Improvements in Tilting Furnaces; and wedo hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying. drawings, and to letters or figures of referencemarked thereon, which form a part of this specification.

This invention relates to tilting furnaces for use in the manufacture ofiron and steel, and has for its object a structure that is simple andeffective, and readily operated, the structure of which will behereinafter described, and particularly pointed out in the claims.

Referring to the drawings, in which like parts are similarly designatedFigure 1 is a vertical, central transverse section of the furnace. Fig.2 is a detail side View of the door-operating mechanism. Fig. 3 is avertical, central section of the lower part of the furnace and themechanism for effecting the tiltin Fig. 1 is a plan view showing thesaddle and operating mechanism. Fig. 5 is a plan view of one of therockers. Fig. 6 is an elevation thereof. Figs. 7, 8, 9 and 10 aresections on lines 7-7, 8-8, 9-9 and 10-1O of Fig. 6.

On a suitable masonry or other foundation A is secured a pedestal,formed for convenience of two castings 2 and 2 There are as many ofthese pedestals as there are rock rs, 3, provided for the furnace. Thefurnace illustrated has but two rockers, but any number may be used, asthe size of the furnace may require or demand.

The pedestal is provided with two bearings 4 one in each portion 2 and 2of the pedestal. These bearings are substantially half bearings in whichlie pins 5 supporting saddles 6 substantially triangular in shape andhaving at one apex a substantially half bearing 7 that rests on the pin5. At the other two apices of the triangular saddles 6 are mountedflanged bearing rollers 8. Each of the rockers 3 rests on the fourrollers 8 of two saddles 6, and the flanges Specification of LettersPatent.

Application filed October 26, 1910.

Patented Feb. 10, 191 1.

Serial No. 589,282.

of these rollers prevent the rockers from slipping off sidewise. Thesesaddles equaliZe the weight, have a slight rocking movement on the pins5 and decrease the power required for tilting the furnace.

The rockers 3, shown in detail in Figs. 5 and 6, are castings made forconvenience in two parts bolted together, one of which has a recess 9into which fits a corresponding pro ect1on 10 on the other at theirmeeting faces, said. recess and projection assisting in holding the twoparts in proper position relative to each other, and taking some of thestrain off the bolts that bolt the two parts together to form a unitaryrocker. The rockers are provided with two openings 11, one in each ofthe two parts thereof, and through these openings and resting thereinare passed girders or I-beams 12, preferably, but not necessarily,having plates 13 011 the top and bottom thereof, as shown in Figs. 3and 1. Each rocker has a number of pads or supports for struts extendingbetween the rockers and shown at 14L and 15, Figs. 6, 8 and 9, to whichthe struts are bolted. These struts are composed preferably of rolledshapes, those secured to the pads 1-1 being I-beams 16 whose ends reston the ledges 14; Figs. 6 and 8.

Placed. on the struts 16 and girders 12 crosswise and between therockers are rolled shapes 17 on which are laid plates 18, forming partof the sheet metal casing of the furnace and on which the refractorywalls of the furnace are built. The rockers 8 directly support thefurnace, 2'. 6., the plates 18, but between the rockers these plates aresupported by the I-beams 17. Connected to the underside of the struts 16are plates 19, and similar plates 20 are connected to and between thegirders 12. The plates 19 and 20 are connected together by suitablelneans, herein shown as angles 21, and the plate or plates 20 arestiffened by similar angles 22. On the plate or plates 20 are securedone or more bearings 23. Two

such bearings 28 are shown in the furnace illustrated, both beinglocated between the rockers, see Fig. 4:. These bearings carry pins 2ston whose ends projecting on each side of the bearing 23, are mounted theends of connecting rods 25. The opposite ends of each pair of connectingrods 25 are mounted on pins or stub-shafts 26 on a cross-head 27. Thecross-head is mounted to slide on guides 28 and is operated by a screw29 passing through the cross-head. One end of each screw 29 is mountedin a fixed bearing 30 and the other in a roller thrust bearing 31adjacent which latter is a gear wheel 32 keyed or otherwise fastened tothe screw. The gear wheels 32 are driven by pinions 33 that are mountedon or driven from the rotor shafts of standard electric motors, notshown.

Between the two pinions 33 and gearing with both of them is an idle gearwheel 34 mounted on a stub-shaft 35, the purpose of which is to equalizeand synchronize the speeds of the two wheels 32 and the screws to whichthey are attached. The wheel 34 is of the same size as the wheels Byoperating the motors in one or the other direction the two screws 28 aresimultaneously rotated, thereby traversing the cross heads-27, which, bymeans of their connecting rods 25 rock or tilt the furnace eitherforward or backward to and from its horizontal position, and hold thefurnace in any of its positions within the limits of operation of theapparatus.

The furnace is provided with one or more openings 36, for theintroduction of stock, the examination of the interior of the furnaceetc. Each opening 36 is closed by a door 37 which opens by slidingupward in suitable ways 38 at the sides thereof. The door 37 is providedwith a peep hole 39, and an eye 40, or other equivalent means, to

' which is fastened a wire rope or chain. The

furnace normally stands in the position shown in full lines in Figs. 1and 3. During certain stages of its operation it is desired to roll,rock or tilt it either forward or backward, the two extreme positionsbeing indicated in dotted lines Fig. 1, and the extreme forward positionbeing the one in which the molten contents of the furnace are dischargedthrough the spout 41. It may be desirable to operate the door 37 in anyposition of the furnace or it more often is the case that the door isnot to be operated during tilting. It is therefore necessary that thedoor-operating mechanism producing reciprocatory movement be such thatthis movement be transmitted to the door in practically the sameproportion to the motion of the moving mechanism, for any position ofthe furnace. To this end there is provided a stationary air or hydrauliccylinder 42 fastened to or otherwise supported by a stationary beam orgirder 43, independent of the furnace. The lower end of the cylinder isconnected to an actuating fluid supply pipe 44, provided with athree-way hand cock 45 within reach of the operator. The cylinder has apiston operating a piston rod 46 which has mounted on its end acrosshead 46 carrying a rope pulley 47 Below the piston and mounted onthe girder or beam 43 are two idle pulleys 48 and 49. A wire rope 50 isconnected at one end to the door 37, i. 6., fastened in the eye 40,passes over a guide pulley 51 on the furnace frame, partially around theidle pulley 48 thence over pulley 47 and the other idle pulley 49 and isfastened at the other end to an eye 52, bolt, or other equivalent deviceat the front of the furnace. The cross-head 46 is connected to one endof a rope 52 that passes over a pulley 53 mounted on the beam or girder43, so that it will be over the cylinder 42, and the other end of therope 52 suspends a counterweight 54. Air is admitted by cock 45 throughpipe 44 to the cylinder beneath the piston. raises the piston, its rod,cross-head and pulley 47, thereby lengthening the distance between 47and 48, 49. One end of rope 50 being held fast at 52, the other endconnected to the door will be drawn up, and with it the door 37. hen thedoor is to be closed the cock 45 is turned to vent the cylinder and pipe44, between the cock and cylinder, to the atmosphere, the weight oftheoperating parts causing the piston to descend and the door to close. Itwill thus be seen from an inspection of Fig. 1, that the position of thepulleys 48, 49 with respect to the pulley 51 is such that the sum of thelengths of the portions of the chain or rope 50 between 48 and 52, and49 and 51 is substantially constant for any position of the furnace,consequently the door may be lifted in any position of the furnace, orthe furnace may be tilted without lifting the door. Any other device maybe used in place of the cylinder 42 and its piston, to cause a bodilymovement or lifting of the pulley 47.

1. The combination with a furnace and tilting rockers therefor; oftilting rocking saddles on which the rockers are carried.

2. The combination with a furnace and tilting rockers therefor; ofrocking saddles and rollers mounted in the saddles on which the rockersbear.

3. The combination with a furnace and rockers therefor; of a pedestalhaving half bearings, a pin laid in each of said bearings, substantiallytriangular saddles each having a half bearing at one of its apicesengaging one of such pins, and flanged rollers at the other two apicesof each saddle on which the rockers bear.

4. The combination with a furnace; of rockers having openings therein,beams extending through and resting in said openings, struts connectingthe rockers together, structural iron supports inclined to one anotherand supported by said struts, and beams to support the furnace on therockers.

5. The combination with a furnace; of a rocker having a laterallydirected flange at its top on which the furnace rests and also havingopenings therethrough, at least one of such rockers on each side of thefurnace, structural iron beams supported by the rockers and in saidopenings, .a strut on each side of said beams connecting the rockerstogether, and supports transverse of the beams and struts whereby thefurnace will be supported at its sides on said rockers intermediate therockers.

6. The combination with furnace; of rockers supporting the furnace atthe sides, structural iron members supported by and extending betweenthe rockers, two bearings connected to said members, a pair of screws, across-head traversed by each screw, a pair of connecting rods betweeneach crosshead, a bearing, a gear wheel on each screw, a pinion to driveeach gear wheel and a synchronizing idle gear wheel gearing with bothpinions.

7. The combination with a furnace; of

ast rockers, each composed of sections connected together and eachsection having an opening therein adjacent the point of connection ofthe sections, pads near the ends of said sect-ions having supportingledges, beams passing through and supported in said openings, strutsconnecting the pads of opposite rockers and resting on said ledges, saidstruts inclined toward one another, and

structural iron supports transverse of the struts and beams whose topslie in the planes of the tops of the rockers.

8. The combination with a tilting furnace, of connecting rods pivotallyconnected at one end to the furnace, across head to which the other endsof said rods are pivotally connected, guides for the cross heads, ascrew and driving means therefor to traverse the cross head.

9. The combination with a tilting furnace, of .a plurality of pairs ofconnecting rods, pivotal connections between one end of each rod and thefurnace, a cross head common to and connected to the opposite ends ofeach pair of rods, a guide for each cross head, a screw to traverse eachcross head, means to drive each screw to traverse the pertaining crosshead and tilt the furnace, and equalizing means to equalize the speedsof the driving means and screws.

In testimony that we claim the foregoing as our invention, we havesigned our names in presence of two subscribing witnesses.

CHARLES P. TURNER. WILLIAM T. DRAKE. JAMES E. LITTLE. Witnesses:

GEO. IV. PARsoNs, O. W. STREE'rr.

Copies of this patent mav be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

